๐ Square Footage Calculator AJAX
Measurements โ Quantity โ Area โ Cost of materials. Fields mirror the reference layout.
Tip: 1 ft = 12 in = 0.3048 m
Measures the other side of the space.
If you have multiple rooms of the same size, increase this.
Default unit is sq ft, matching common usage.
๐ฐ Cost of materials
per sq ft
Unit depends on your chosen area unit.
$
Auto-updates in real time.
Computed Areaโ
Unit Priceโ
Total Costโ
All values update automatically as you type.
๐งฉ Step-by-step derivation (algebra)
Enter values to see the full derivation.
๐ References & unit notes
| Item | Details |
|---|---|
| Standard (method) | ANSI Z765-2020 โSquare Footage โ Method for Calculatingโ (Home Innovation Research Labs). |
| Why sq ft? | Common in US/Canada/UK; conversions provided for metric units. |
| Units | Length: mm, cm, m, in, ft, yd. Area: sq mm, sq cm, sq m, sq in, sq ft, sq yd, acre, hectare. |
Note: This tool handles rectangles. For irregular shapes, break into simple parts and sum the areas (as recommended in many square-footage guides).